ROBERTSON, WILLIAM. An Historical Disquisition concerning the Knowledge which the Ancients had of India; and the Progress of Trade with that Country prior to the Discovery of the Passage to it by the Cape of Good Hope. London, 1791. 4to, contemporary boards, a little soiled, spine rubbed, cover hinge starting; minor foxing throughout, maps slightly wrinkeled at inner margin affecting the plate. 2 folding engraved maps.